1. Maxwell J.C.—Treatise on Electricity and Magnetism, Vol. 1, Oxford, Clarendon Press series, 1873, p. 365.
2. Holliday L. (Ed.).—Composite Materials, Elsevier Press, 1966.
3. Brooks A.E. andNewman K. (Ed.).—The Structure of Concrete, Cement and Concrete Association, London 1968.
4. Ref. [2]Holliday L. (Ed.).—Composite Materials, Elsevier Press, 1966 p. 29.
5. Mullick A.K.—Influence of Unhydrated cement on Creep, M. Sc. Thesis, University of Calgary, 1968.